Bourse Istanbul (BIST 100) index  was up at the opening of the morning session on Monday. The benchmark BIST-100 index increased 228.59 points when compared to closing of Friday\'s second session and opened at 82,299.84. Stocks gained 0.28 percent in value. \"Bourse Istanbul\" was registered on April 3, disincorporating Istanbul Stock Exchange (ISE) and Istanbul Gold Exchange (IAB).